有色金属科学与工程2016，Vol.7Issue(2)：135-139,5.DOI:10.13264/j.cnki.ysjskx.2016.02.024
烧结温度对Nd24.38Ce0.52Gd6.65Febal.TM1.76B0.95磁体组织与性能的影响
Effect of sintering temperature on microstructure and properties of Nd24.38Ce0.52Gd6.65Febal.TM1.76B0.95 magnet
摘要
Abstract
Nd24.38Ce0.52Gd6.65FebalanceTM2.18 B0.95 (mass fraction,%) permanent magnets were prepared using du-al-alloy technology. The effect of sintering temperature on the microstructure and properties of the magnets was probed by scanning electron microscopy, energy dispersive spectrometer, AMT-4 magnetic tester and electronic universal mechanical testing machine. The sintering temperature applied in the article ranged from 1 060 °C to 1 100 °C . The results show that when the sintering temperature is 1 080 ℃, the best microstruc-ture of the magnets is obtained with uniform and tight grains and even-distributed Re-rich phase; with the sintering temperature rising from 1 060 °C to 1 100 °C, the content of Re in Re-rich phase rapidly increases from 84.98 % up to 98.04 % and the diffusion of Ce from the main phase to the Re-rich phase is greatly imp roved during the sintering process; magnetic remanence (Br), coercivity (Hcj), and maximum energy product [(BH)max] of the magnets raise first and then decrease as the increase of sintering temperature;when sintered at 1 080 ℃, the magnets exhibits the best properties, with Br of 1.22 T, Hcj of 964 kA/m and (BH)max of 293 kJ/m3, along with the maximum bending strength of 257 MPa.关键词
烧结温度/铈/微观组织/磁性能/抗弯强度Key words
sintering temperature/cerium/microstructure/magnetic property/bending strength分类
矿业与冶金引用本文复制引用
彭光怀,杜西龙,郭华彬,邱世涛..烧结温度对Nd24.38Ce0.52Gd6.65Febal.TM1.76B0.95磁体组织与性能的影响[J].有色金属科学与工程,2016,7(2):135-139,5.基金项目
江西省教育厅科技项目 （）
